| abstract |
The present invention provides a polyimide precursor having a unit structure represented by the general formula (1) and a unit structure represented by the general formula (2), regardless of the film baking conditions, whitening of the film, cracks, The present invention provides a polyimide precursor that does not cause foaming, and provides a flexible TFT array, a flexible color filter, a flexible substrate with a gas barrier layer, a flexible display device using these, and the like. [Chemical 1] (In General Formulas (1) and (2), X 1 to X 4 each independently represent a hydrogen atom, a monovalent organic group having 1 to 10 carbon atoms, or a monovalent alkylsilyl group having 1 to 10 carbon atoms. R 1 is represented by general formula (3), and R 2 is represented by general formula (4).) [Chemical formula 2] (In General Formula (4), R 3 and R 4 each independently represent a monovalent organic group having 1 to 10 carbon atoms.) |